Our early 21st Century world may be the best it ever gets. Perhaps with over population and climate change etc, it all goes downhill from now on?
While I understand your 'drift', perhaps we need to be more optimistic. We have to trust in G-d.
There has always been change, and our places of worship are still standing.
An Einstein quote: 'I know not with what weapons the Third World War will be conducted -- but the Fourth will be fought with sticks and stones.'
A distinct possibility, if not taken literally.